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Experimental murine candidiasis: cell-mediated immunity after cutaneous challenge
Infection and Immunity
|January 1, 1980
Summary
Cellular immune responses to Candida albicans involve T-lymphocytes. This study demonstrates that both in vivo and in vitro reactivity to Candida antigens depends on viable T-lymphocytes, confirmed through cellular transfer and antibody-blocking experiments.
Area of Science:
- Immunology
- Microbiology
Background:
- Candida albicans is a common fungal pathogen.
- Understanding cellular immune responses is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the in vivo and in vitro cellular immune responses to Candida albicans antigens.
- To determine the role of T-lymphocytes in mediating these responses.
Main Methods:
- Sensitization of mice with Candida albicans blastospores.
- In vitro lymphocyte stimulation assay using Candida antigens (glycoprotein, membrane extract, cytoplasmic substances).
- In vivo delayed hypersensitivity assay (footpad assay) and cellular transfer experiments.
Main Results:
- Delayed hypersensitivity to Candida antigens was mediated by peritoneal exudate cells, not serum.
- T-lymphocytes were identified as the key mediators of both in vivo and in vitro immune responses.
- Cross-reactivity was observed with Candida tropicalis, but not other tested yeasts.
Conclusions:
- Cellular immunity to Candida albicans is T-lymphocyte dependent.
- Specific Candida antigens can elicit measurable immune responses in vitro and in vivo.
- Cross-reactivity patterns suggest potential for broader antifungal immune strategies.